## Transform annual data into monthly cumulative data

Use this forum to discuss any issues relating to Systems Dynamics and Systems Thinking.
Priscila
Member
Posts: 32
Joined: Thu Aug 25, 2016 1:11 pm
Vensim version: PRO

### Transform annual data into monthly cumulative data

I have an input variable (Demand) that is given every 15 minutes for 12 months and I need to gather this data of 15 minutes in 1 hour to get the consumption, I need between annual data and that are presented monthly, the objective is to get the Value of the monthly energy bill that is the result of the sum of consumption multiplied by the consumption rate and demand multiplied by the demand rate, how can I do that?

Posts: 3043
Joined: Wed Mar 05, 2003 3:10 am

### Re: Transform annual data into monthly cumulative data

I don't really follow what you are asking, but it sounds like a job for Excel.
http://www.ventanasystems.co.uk/forum/v ... f=2&t=4391

Units are important!
http://www.bbc.co.uk/news/magazine-27509559

Priscila
Member
Posts: 32
Joined: Thu Aug 25, 2016 1:11 pm
Vensim version: PRO

### Re: Transform annual data into monthly cumulative data

At first, the demand is an initial variable, after it is reduced as a function of a generator of energy that is inserted in the system, where the feedback is present generating a new variable of demand and another of consumption, for that reason I have to do this in Vensim . I need to know the function that does and displays the average for every 4 data and also if it is possible to make an accumulator that in a certain period is zeroed and starts counting again.

Posts: 3043
Joined: Wed Mar 05, 2003 3:10 am

### Re: Transform annual data into monthly cumulative data

Priscila wrote:At first, the demand is an initial variable, after it is reduced as a function of a generator of energy that is inserted in the system, where the feedback is present generating a new variable of demand and another of consumption, for that reason I have to do this in Vensim .
ok. This was not clear in your initial question.
Priscila wrote:I need to know the function that does and displays the average for every 4 data
Does this help?
http://www.vensim.com/documentation/ind ... _trend.htm
Priscila wrote:and also if it is possible to make an accumulator that in a certain period is zeroed and starts counting again.
Use a level and empty it using level/time step when you want it zeroed.
http://www.ventanasystems.co.uk/forum/v ... f=2&t=4391

Units are important!
http://www.bbc.co.uk/news/magazine-27509559

Priscila
Member
Posts: 32
Joined: Thu Aug 25, 2016 1:11 pm
Vensim version: PRO

### Re: Transform annual data into monthly cumulative data

Use a level and empty it using the level / time step when you want it to be zeroed.
Could you give me an example?

Posts: 3043
Joined: Wed Mar 05, 2003 3:10 am

### Re: Transform annual data into monthly cumulative data

Code: Select all

``````some level = integ (inflow - outflow - reset level, initial stock)

reset level = if then else ( time = 10 , some level / time step , 0 )``````
This will reset the level at time = 10.
http://www.ventanasystems.co.uk/forum/v ... f=2&t=4391

Units are important!
http://www.bbc.co.uk/news/magazine-27509559

Priscila
Member
Posts: 32
Joined: Thu Aug 25, 2016 1:11 pm
Vensim version: PRO

### Re: Transform annual data into monthly cumulative data

That way I can show the values ​​at each time interval, every 10, but I can not reset the accumulator. I need, for example, to add from 0 to 10, to zero the count add from 11 to 22 and so on and show on the same variable.

Priscila
Member
Posts: 32
Joined: Thu Aug 25, 2016 1:11 pm
Vensim version: PRO

### Re: Transform annual data into monthly cumulative data

Does the vensim software contain no more than 8000 data in tabular form?

Posts: 3043
Joined: Wed Mar 05, 2003 3:10 am

### Re: Transform annual data into monthly cumulative data

Priscila wrote:That way I can show the values ​​at each time interval, every 10, but I can not reset the accumulator. I need, for example, to add from 0 to 10, to zero the count add from 11 to 22 and so on and show on the same variable.
I think this would be much easier if you upload the model you are working on so we can see. I'm really struggling to understand what you are trying to do.
http://www.ventanasystems.co.uk/forum/v ... f=2&t=4391

Units are important!
http://www.bbc.co.uk/news/magazine-27509559

Posts: 3043
Joined: Wed Mar 05, 2003 3:10 am

### Re: Transform annual data into monthly cumulative data

Priscila wrote:Does the vensim software contain no more than 8000 data in tabular form?
Correct.
http://www.ventanasystems.co.uk/forum/v ... f=2&t=4391

Units are important!
http://www.bbc.co.uk/news/magazine-27509559

Priscila
Member
Posts: 32
Joined: Thu Aug 25, 2016 1:11 pm
Vensim version: PRO

### Re: Transform annual data into monthly cumulative data

The variable invoice is the sum of demand (given every 15 minutes) times the tariff of demand + consumption (which is the sum of demand every 1 hour) times the consumption tariff ...
The consumption variable should be the average of the four demand values, so that the data every 15 minutes are transformed into hourly data. After these hourly data must be added every month, that is, they need to be accumulated from time 0 to time 2975, from time 2976 to time 5759 and so on until total sum of monthly consumptions.
Lastly, the invoice variable must be calculated monthly, that is, it accumulates until the time 2975, it zeroes and it begins to accumulate of the time 2976 until 5759, zera and begins to accumulate in 5760 until 8735 and so on.
There are a total of 14 months of simulation.
Also, after the simulation I need to transfer the data to excel, this is possible given that it is a total of 40800 data.
Attachments
etanol hard_anual1.mdl

Posts: 3043
Joined: Wed Mar 05, 2003 3:10 am

### Re: Transform annual data into monthly cumulative data

I cannot find a parameter called "invoice" in your model.

I think it might be better if you first try and follow some best practice on your model. It doesn't pass the most basic of tests (dimensional consistency), it's impossible for me to work out what the model is supposed to do or if any of the calculations are correct (what is demand even measured in?).
http://www.ventanasystems.co.uk/forum/v ... f=2&t=4391

Units are important!
http://www.bbc.co.uk/news/magazine-27509559

Priscila
Member
Posts: 32
Joined: Thu Aug 25, 2016 1:11 pm
Vensim version: PRO

### Re: Transform annual data into monthly cumulative data

I have a series of 9 data:
2
3
1
2
4
5
6
7
5
It is necessary to obtain in the vensim, the maximum value comparing every 3 intervals as follows:
0
0
3
0
0
5
0
0
7
How can I perform this operation
Also, how do I export the values obtained in a simulation with more than 8000 times

Posts: 3043
Joined: Wed Mar 05, 2003 3:10 am

### Re: Transform annual data into monthly cumulative data

Priscila wrote:I have a series of 9 data:
2
3
1
2
4
5
6
7
5
It is necessary to obtain in the vensim, the maximum value comparing every 3 intervals as follows:
0
0
3
0
0
5
0
0
7
How can I perform this operation
Where is the logic in this? Why are there zeros if you are calculating the maximum over 3 intervals?
Also, how do I export the values obtained in a simulation with more than 8000 times
Vensim documentation, search for export.